Scraper for furrow-openers.



T. BRENNAN, J11. SORAPER FOR PURROW OPENERS.

APPLICATION FILED JULY 11,1911.

4 SHEETS-SHEET 1.

Patented Apr. 2, 1912.

T. BRENNAN, JR.

SORAPER FOR FURROW OPENERS.

APPLICATION FILED JULY 11, 1911.

1 ,O22,352. Patented Apr. 2, 1912.

4 SHEETS-SHEET 2.

MZricdsea: Inventor: M 1720777a0fi7'e7272anfi COLUMBIA PLANDORAPH CO"WASHINGTON. U. C.

T. BRENNAN, JR. SOEAPBR FOR PURROW OPENERS.

APPLICATION FILED JULY 11,1911.

Patented Apr. 2, 1912.

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T. BRENNAN, JR. SORAPER FOR FUREOW OPENERS.

APPLICATION FILED JULY 11,1911.

Patented Apr. 2, 191 2.

4 SHEETS-SHEET 4- Zz/iinmaw:

COLUMBIA PLANOORAFH C0.. WASHINGTON. D- C.

UNITED STATES PATENT OFFICE.

THOMAS BRENNAN, JR-., OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO THE MONITORDRILL COMPANY, OF MINNEAPOLIS, MINNESOTA, A CORPORATION OF MINNESOTA.

SCRAPER FOR FURROW-OPENERS.

To all whom it may concern:

Be it known that I, THOMAS BRENNAN, J12, a citizen of the United States.residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements in Scrapersfor Furrow-Openers, of which the following is a specification.

This invention relates to an improved form of outside scraper for furrowopeners of the disk type, in which the scraper is supported at a. pointnear the toe of the boot.

I am familiar with a certain form of scraper which is attached directlyto the toe of the boot so that the latter serves as a mounting orsupport therefor. This con struction, however, has been found to possessa number of disadvantages, among which may be enumerated that the strainexerted on the scraper must be transmitted through the boot itself tothe f 'ainework above, and that it is very di'tlicult, if notin'ipracticable, to obtain the desired resiliency in the scraper supportwhen the boot constitutes such support.

Objects of my invention, in addition to those enumerated, are: toprovide a scraper which will efficiently clear the outside surface ofthe disk; to provide a suitable mounting or support for the scraperwhich shall have such resiliency that the scraperwill be held in firmengagement with the disk at all times, notwithstanding the fact that thelatter is rotating and changes its position from time to time; toprovide a mounting for the scraper which may be brought within anextremely narrow space, so that the consecutive furrow openers may beplaced close together without danger of clogging or amming mud, etc.,between them to provide a support for the scraper which may, at the sametime, serve as a support for the boot, and to so position the parts withrespect to each other that the line of forces from the drawbar to theboot and to the scraper will be practically straight from front to rearand will pass practically through the disk mounting.

Other objects and uses will appear from a detailed description of theinvention, which consists in the features of construction andcombination of parts hereinafter described and claimed.

In the drawings,-I*igure 1 shows a side view of one form of furrowopener embody- Specification of Letters Patent.

Application filed July 11, 1911.

Patented Apr. 2, 1912.

Serial No. 637,919.

ing my invention, looking toward the outside of the disk; Fig. 2 shows aside view similar to Fig. 1, of a modified construction of furrowopener; Fig. 3 shows a plan view of the furrow opener of Fig. 1;Fig.4shows a section taken on the line %l't of Fig". 1, looking in thedirection of the arrows; Fig. 5 shows a section taken on the line ofFig. 2, looking in the direction of the arrows; Fig. 6 shows a side viewsimilar to Fig. 1, of a second modifization; Fig. 7 is a plan view ofthe modified construction shown in Fig. 6; and Fig. 8 shows a sectiontaken on the line S8 of Fig. 6, looking in the direct-ion of the arrows.

In the embodiment of my invention I provide an arched arm which extendsfrom the dragbar over the disk to the rear portion thereof, which armmay be either a continuation of the dragbar itself or may be attached tothe same. The scraper is carried by the rear end of this arm, which, byreason of its length and shape, possesses the necessary resiliency orelasticity for maintaining the scraper against the disk with the properpressure at all times. At times, for the sake of convenience, the bootthrough which the grain is delivered may also be carried by the arm,although, as will presently appear, the scraper itself is at all timesentirely independent of the boot, which latter might be completelyremoved without in any way affecting the scraper as such.

Referring now to the drawings, I will first describe the constructionshown in Figs. 1, 3 and 4. In this case the dragbar 9 has its forwardend 10 twisted over so that it lies in a substantially horizontal plane,a yoke 11 being attached to this forward end. The rear end 12 of thedragbar is bent out at an angle and carries any suitable form ofmounting 13 for the disk lat. An arched arm 15 has its lower end 16rigidly secured to the dragbar, as by means of bolts 17, the arm curvingupward and over the edge of the disk so that its rear portion 18 lies infront of the same. At no point, however, does the arm touch the disk.The scraper 19 is carried by the lower end 20 of the arm. This scraperis preferably in the form of a plate, having its forward end 21 curvedupwardly and bent at a suitable angle at the point 22, as is shown inFig. 4. The scraper is securely attached to the lower end of the arm, asby means of rivets 23, and its rear end 24 extends outwardly asutficient distance to prevent the entrance of dirt into the lower end25 of the boot.

' The boot itself is of pressed metal construction, being formed fromtwo sheets of metal oined together in their rear portions by flanges 26and in their forward portions by flanges 27. The latter flanges areprovided with pairs of ears 28 and 29, each pair embracing the arm andbeing suitably secured to the same. A drag chain eye 30 and a pressuredevice lug 31 may be provided by properly forming the flanges 26.

By reference to Fig. 4 it will be clearly understood that the rear end24 of the scraper does not come into engagement with the boot at all,and that the scraper and boot are entirely independent of each other.The scraper is carried directly by the arm, which in turn provides theresiliency necessary for maintaining the scraper at all times in properengagement with the disk I will now describe the construction shown inFigs. 2 and 5. In this case the dragbar extends back from the yoke tothe disk mounting and the arched arm is attached to the dragbar, as inthe previous construction. However, in this case the flanges 27 on thefront of the boot are extended forward at all points a sufficient amountto embrace the arm between them, and the scraper is of slightlydifferent shape. By forming the flanges in this manner there is nodanger of dirt and twigs, etc., catching in between the arm and theboot, for this space is completely closed by the flanges. In thisconstruction, also, the scraper is not provided with a rearwardextension 24, as in the previous construction. I wish distinctly to callattention, however, to the fact that the flanges 27 are brought togetherat the point 32, so that there is no possibility of grain which ispassing down through the boot coming into contact with the arm. In otherwords, the boot itself is entirely distinct from the arm in every way.

In Figs. 6, 7 and 8 I have shown a second modification, in which the armis really an extension of the dragbar, the disk mounting being carriedby a short bar which is attached to the dragbar. In this case thedragbar 9 is provided with an offset at the point 83 and it thencontinues over as the arm, occupying a position substantially the sameas that of the arm in each of the previous constructions. The bar 34 isattached to the dragbar in the offset of the latter by means of bolts 35and carries the disk mounting 36 at its rear end. The form of boot andscraper in this present construct-ion is similar to that shown in Figs.2 and 5, practically the only difference consisting in the fact that thearm is really an extension of the dragbar.

From a careful examination of each of the above described constructionsit will be seen that the mounting for the scraper is entirelyindependent of the boot. The boot might be removed without affecting thescraper in any way; the latter would still occupy its proper position onthe disk and would be properly maintained against the same.

Although I have herein shown and described only three forms of mountingfor the scraper, still I contemplate within the scope of my inventionany form of construction in which the scraper is carried by a memberindependent of the boot.

I claim:

1. The combination with the draw bar and disk of a disk implement, of anarched member of resilient material having its forward end rigid withthe draw bar and extending up and over the disk from one side to theother of the same, and a scraper secured to the lower end of the archedmember, substantially as described.

2. The combination with the draw bar and disk of a disk implement, of anarched member of resilient material having its forward end rigid withthe draw bar and extending up and over the disk from one side to theother of the same, a boot secured to the rear end of the arched member,and a scraper se-' cured to the lower end of the arched member adjacentto the toe of the boot and inde pendent thereof, substantially asdescribed.

3. The combination with the draw bar and disk of a disk implement, of anarched member of resilient material having its forward end rigid withthe draw bar and its arched portion extending up and over the disk, anda scraper secured to the lower end of the member, whereby the scraper isheld firmly and evenly in engagement with the disk, by reason of theresiliency of the arched member, substantially as described.

4. The combination with the draw bar and disk of a disk implement, of anarched member of resilient material having its forward end rigid withthe draw bar and its arched portion extending up and over the disk fromone side of the same to the other, and a scraper secured to the lowerend of the member, whereby the scraper is held firmly and evenly inengagement with the disk, by reason of the resiliency of the archedmember, substantially as described.

5. The combination with the draw bar and disk of a disk implement, of anarched member of resilient material having its forward end rigid withthe draw bar and its arched portion extending up and over the disk fromone side of the same to the other, a grain boot secured to the rear endof the arched member, and a scraper secured to the lower end of themember independently of the .boot, whereby the scraper is held firmlyand evenly in engagement with the disk, by reason of the resiliency ofthe arched member, substantially as described.

6. In a disk implement, the combination of an arched member extending upand over 5 the disk from its forward edge to its rear edge and havingits rear portion downwardly depending, a scraper secured to the lowerend of said downwardly depending portion, and a boot carried by saiddowne wardly depending portion independently of the scraper,substantially as described.

7. In a disk implement, the combination of an arched member extending upand over the disk from its forward edge to its rear 5 edge, and havingthe rear portion of such member downwardly depending, a scraper carriedby the lower end of said downwardly depending portion, and extendingforwardly and upwardly, a boot carried by said downwardly dependingportion independent of the scraper, a disk, and a suitable connectionfrom the disk to the forward ,portion of said member, substantially asdescribed.

8. In a disk implement, the combination of a member extending over theupper portion of the disk and having its forward port-ion adjacent theforward. edge of the disk and having its rear portion downwardlydepending adjacent the rear edge of the disk, a forwardly and upwardlyex tending scraper secured to the lower end of the said downwardlydepending portion,

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

and a boot carried by said downwardly depending scraper, substantiallyas described.

9. In a disk implement, the combination of a member having its forwardportion adapted to constitute a drawbar connection, and extending overthe upper edge of the disk from one side of the same to the other, andhaving its rear portion downwardly depending adjacent the rear edge ofthe disk, a forwardly and upwardly extending scraper secured to thelower end of said depending portion, and a boot carried by saiddownwardly depending portion independent of the scraper, substantiallyas described.

10. In a disk implement, the combination of an arched bar having itsforward portion lying adjacent the forward edge of the disk, and rigidwith the drawbar, and arching up and over the disk from one side of thesame to the other, and having its rear portion downwardly depending adjaccnt the rear edge of the disk, and its lower end forwardly projecting,a forwardly and upwardly extending scraper secured to said lower end,and a boot carried by the downwardly depending portion independently ofthe scraper, substantially as described.

THOMAS BRENNAN, JR.

\Vitnesses E. R. BRENNAN, A. R. Tonnna.

Washington, I). 0.

portion independently of the

